2. Usage Guidelines. Note Enabling SSO initiates a controller reboot. Cisco Public HA SSO behavior Redundancy Port (RP) BRKEWN-2846 19 Redundancy Port (RP) • Syncs configuration and AP/Client databases between Active and Standby • Monitors status of the chassis • Possible single point of. 05-25-2012 08:56 AM - edited 03-07-2019 06:54 AM. Step 3: end Example: Switch (config-red)# end Returns to EXEC mode. Step 4. Step 4: mode sso. Step 2: mode sso. Step 5. Enter configuration commands, one per line. ホット スタンバイ WLC の設定. The active pseudowire. The time required by the device to switch over from the active RP to the standby RP varies by platform: Although the newly active processor takes over almost immediately following a switchover, the time required for the device to begin operating again in full redundancy (SSO) mode can be several minutes, depending on the platform. 配置. 2016-10-12 10:10 AM 2017-09-01 03:01 AM 更新. 2. Step 2. Example: Device(config-red)# mode sso: Configures stateful switchover. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. Example: Device(config-red)# mode sso: Configures stateful switchover. Cisco 3504 Controllers. 4. C6807-XL#show redundancy Redundant System Information :----- Available system uptime = 21 hours, 41 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = none Hardware Mode = Simplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled. In Cisco Wireless LAN Controllers, redundancy is achieved in two ways— n+1 and AP SSO redundancy. Step 2: mode sso. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to privileged EXEC mode. Dans cet exemple, la commutation avec état (SSO) haute disponibilité (HA) est configurée entre deux instances 9800-CL, qui exécutent la même version du logiciel Cisco IOS, qui ont été configurées avec des WMI séparés et avec une interface utilisateur graphique accessible à l'adresse. Step 5. Router#show redundancy Redundant System Information : ----- Available system uptime = 6 days, 4 hours, 17 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = none Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode =. This example shows how to set the redundancy mode to SSO: Device(config)# redundancy Device(config-red)# mode sso Device(config-red)# policy config-sync prc reload. SSO is supported in Cisco IOS Release 12. 12. HSRP is SSO aware on interfaces that are configured for HSRP and the standby RP is automatically reset. Standby として動作していた WLC のポートを変更するか、コンフィグの初期化する. Enters redundancy configuration mode. Configuration on. • With a Supervisor Engine 720, if all the installed switching modules have DFCs, enter the fabric switching-mode allow dcef-only command to disable the Ethernet ports. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. HA_CONFIG_SYNC-6-BULK_CFGSYNC_SUCCEED: Bulk Sync succeeded Switchover Process Restrictions. The DHCP high availability features are enabled by default when the redundancy mode of operation is set to SSO. Note Enabling SSO initiates a controller reboot. Sets the redundancy configuration mode to SSO on both the active and standby RP. reload Table 7-3 Software Redundancy Options for Cisco ASR 1002 and 1004 Routers Router Default HA Setting Options with 2 GB or DRAM Options with 4 GB or DRAM Cisco ASR 1002 Router None None None, RPR, SSO Cisco ASR 1004 Router None None None, RPR, SSO2 つの Cisco Wireless Services Module 2（WiSM2）プラットフォーム間の HA を実現するには、コントローラを単一のシャーシに配置するか、仮想スイッチング システム（VSS）を使用してリダンダンシー VLAN を複数のシャーシ間に拡張することで、複数のシャーシに配置する必要があります。3. Note • The two Gigabit Ethernet interfaces on the redundant supervisor engine are always active unless you enter the fabric switching-mode allow dcef-only command. Cisco SSO (frequently used with NSF) minimizes the time a network is unavailable to its users following a switchover while continuing to forward IP packets. You can configure the Stateful Interchassis Redundancy feature to determine the active device from a group of devices, based on a number of failover conditions. Router(config)# mode sso. Step 2. SSO is supported in Cisco IOS Release 12. Note After configuring SSO mode, the standby RP will automatically reset. Router(config)# mode sso. %HA-5-MODE:Operating mode is sso, configured mode is sso. If it is in ROMMON, try boot with manual "boot" command. 150. Cisco 3504 WLCs. x [S2C-build-v16x_throttle-4064-/. Router (config-red)# end. Usage Guidelines. Example: Device#. 170 West Tasman Drive. Go to solution. Example: Device (config-red)# mode sso: Configures SSO. 0 を. 39. We have two Cisco WLC 8540 in HA pair. = 0 Last switchover reason = active unit removed Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode =. Example: Device (config-red)# end Controller # show redundancy Redundant System Information : ----- Available system uptime = 6 days, 9 hours, 23 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = not known Hardware Mode = Simplex Configured Redundancy Mode = SSO Operating Redundancy Mode = SSO Maintenance Mode = Disabled Communications. Redundancy may not work due to differences between the Cisco IOS releases. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. Inbox redundancy with Stateful Switchover (SSO) mechanism provides redundancy within the same device. The mode sso command can be entered only from within redundancy configuration mode. x. x [S2C-build-v16x_throttle-4064-/. And the output of the "show redundancy" is: Hardware Mode = Duplex. Cat-6509#show redundancy Redundant System Information : ----- Available system uptime = 10 hours, 12 minutes Switchovers system experienced = 1 Standby failures = 1 Last switchover reason = user initiated Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso!--- This verifies that software has set the. What is stateful switch over? Stateful Switchover (SSO) is a redundancy feature that allows a Cisco device with two route processors to synchronise router configuration and control plane state information. Enters redundancy configuration mode. Cisco Stateful Switchover (SSO) is one of the redundancy mechanisms used in networking. The mode sso command can be entered only from within redundancy configuration mode. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. SSO is supported in Cisco IOS Release 12. Remove SSO HA Configuration: 5. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. 39. シングル構成しているのが片方電源を抜いてもトラップがとばないのです。在本示例中，高可用性 (HA)狀態切換 (SSO)配置在兩個9800-CL例項之間，這些例項運行相同的Cisco IOS軟體版 本，這些例項已配置有獨立的WMI，並且可以通過以下網址訪問的GUI. 61 /24. The documentation set for this product strives to use bias-free language. Cisco NSF with SSO allows for the forwarding of data packets to continue along known routes while the routing protocol information is being restored following a switchover. 0. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Step 5:. 0. For Enterprise Services or IP Base mode, use ISSU to upgrade software for both RPR and SSO redundant mode. If the router is configured for SSO mode, and the active RP fails before the standby is ready to switch over, the router will recover through a full system. hw-switch switch 1 logging onboard message level 3. exit 6. 1. You can configure an n+1 redundant mode. " Configuring the Redundancy Mode. All unsaved configuration will be saved. If I enter SSO mode on the second node I got an error: >config redundancy mode sso WARNING: 1. The switch is. Both RPs must run the same Cisco IOS image. Route Processor Redundancy is supported only on routers that support dual RSPs. config redundancy mode sso. Step 4. 39. After rebooting the primary controller changed into Maintanence Mode. End with CNTL/Z. 10. Both RPs are running the same Cisco. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. Step 6. 48. The software upgrade procedure supported by supervisor engine redundancy allows you to reload the Cisco IOS software image on the redundant supervisor engine, and once complete, reload the active supervisor engine once. Step 4 Router# show redundancy states Displays the operating redundancy. Step 6: mode sso. When a redundant supervisor engine runs in SSO mode, the redundant supervisor engine starts up in a fully-initialized state and synchronizes with the persistent configuration and the running configuration of the active supervisor engine. The software upgrade procedure supported by supervisor engine redundancy allows you to reload the Cisco IOS software image on the redundant supervisor engine, and once complete, reload the active supervisor engine once. Communications = Up. If a VSS does not meet the requirements for SSO redundancy, it will be incapable of establishing a relationship with the peer switch. Cisco HA architecture is based on redundant Route Processors and the NSF and SSO features, such that ports stay active and calls do not drop, eliminating network disruption during upgrades. After this the WLC will reboot and come back as Primary and Standby WLC again. 05-25-2012 08:56 AM - edited 03-07-2019 06:54 AM. Cisco 5520 wireless LAN controller has a failover RP Port. 2. Check if There is Sufficient Available Memory on Flash 4. SSO HSRP. Communications = Up . Local State = ACTIVE. If SSO mode cannot be established between the active and standby switches because of an incompatibility in the configuration file, a mismatched command list (MCL) is generated at the active switch and a reload into route processor redundancy (RPR) mode is forced for the standby switch. Step 5: exit. If a switch is configured for SSO mode, then stand-by supervisor engine stops at " FIB table synchronization". † Software upgrade. Router(config-red)# end. SSO refers to the implementation of Cisco IOS software that allows applications and features to maintain a defined state between an active and standby Route Processor (RP). 3 255. If you perform an online insertion and removal (OIR) of the module, the switch resets during the. 在本示例中，高可用性 (HA)状态切换 (SSO)配置在运行相同Cisco IOS软件版本的两个9800-CL实例之间，这些实例已配置有独立的WMI，且可在以下位置访问 GUI: 第一个地址为IP地址10. 255. Router# show redundancy states. Example: Router(red-config)# exit: Exits to global configuration mode. The system has experienced 4 switchovers. To re-enable SSO, execute the command Config redundancy sso on the primary and secondary controllers. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. This example shows how to set the redundancy mode to SSO: Device (config)# redundancy Device (config-red)# mode sso Device (config. Step 5: end. ATM SSO is not configurable and runs by default on networking devices configured with ATM and Redundancy Mode SSO. Step 3: end Example: Switch (config-red)# end Returns to EXEC mode. Recovery Mode Yes Yes Default GW Check Yes Yes LACP, PAGP with SSO No Yes SMU for controller patching No Yes. The redundancy port in standalone controllers and the redundancy VLAN in Cisco WiSM2 are assigned. While implementing Nonstop Forwarding (NSF) technology in systems using SSO. Step 4: show running-config Example: Enters redundancy configuration mode. The software upgrade procedure supported by supervisor engine redundancy allows you to reload the Cisco IOS software image on the redundant supervisor engine, and once complete, reload the active supervisor engine once. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to privileged EXEC mode. Example: Device (config-red)# mode sso: Configures SSO. Switch(config-red)# end. Example: Device (config-red)# mode sso: Configures SSO. Example: Device(config-red)# exit: Exits redundancy. SSO is supported in Cisco IOS Release 12. 151. 2. Redundancy Mode (Configured) = sso Redundancy State = sso Maintenance Mode = Disabled Manual Swact = enabled Communications = Up client count = 115Enters global configuration mode. = SSO Redundancy Mode (Configured) = SSO Redundancy State = Non Redundant Manual Swact = disabled (system is simplex (no peer unit)) Communications = Down Reason:. 3. Step 5: Enabling SSO reboots the. Redundancy may not work due to differences between the Cisco IOS releases. Displays the operating redundancy mode. 48. redundancy Router(config)# redundancy. Enters redundancy configuration mode. 3. Example: Device(config-red)# mode sso: Configures stateful switchover. Step 4: mode sso. If the command is not found in the Catalyst 4500 Command Reference, it is located in the larger Cisco IOS library. Enters redundancy configuration mode. # redundancy Switch(config-red)# mode sso Switch(config-red)# end Switch# show redundancy states my state = 13 -ACTIVE peer. Redundancy Mode = SSO ENABLED. Example: Device(config-red)# end: Exits redundancy configuration mode and. Step 3. 168. Cat-6509#show redundancy Redundant System Information : ----- Available system uptime = 10 hours, 12 minutes Switchovers system experienced = 1 Standby failures = 1 Last switchover reason = user initiated Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso!--- This verifies that. 0. When a redundant supervisor engine runs in SSO mode, the redundant supervisor engine starts up in a fully-initialized state and synchronizes with the persistent configuration and the running configuration of the active supervisor engine. Usage Guidelines. Example: Device(config-red)# end: Exits redundancy configuration mode and. >> configure the IP of the redundancy management interface with: config interface address redundancy-management <new IP > <new IP for the peer redundancy management interface> This needs to be done on both of them using the console connection and then enable the SSO again as: >> config redundancy mode sso. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Switch# show. 12. 255 ! interface GigabitEthernet1/0/4 ip vrf forwarding vpn1 ip address 10. Step 4. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the switches in the stack to support SSO mode. Step 3:. Configurations. Redundancy Mode (Configured) = sso Redundancy State = sso Maintenance Mode = Disabled Manual Swact = enabled Communications = Up client count = 115Cisco NSF は、SSO 対応のデバイスにおけるルーティング フラップを抑止することによって、ネットワークの安定性を保ちます。 Cisco NSF と SSO により、スイッチオーバー後にルーティング プロトコル情報が復元される間も、既知のルートでデータ パケットの. Displays the operating. you then add the SSO redundancy commands on the active supervisor and you can insert the prepared new supervisor. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. Router# show redundancy Redundant System Information : ----- Available system uptime = 39 minutes Switchovers system experienced = 1 Standby failures = 0 Last switchover reason = user forced Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled. The default mode for the Cisco 7500 series routers is HSA. Cisco NSF works with the SSO feature. Enters configuration mode. Step 3:. Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode =. Router(config-red)# end. Redundancy may not work due to differences between the Cisco IOS releases. Enters redundancy configuration mode. Check if Auto-Boot is Enabled 6. # redundancy Switch(config-red)# mode sso Switch(config-red)# end Switch# show redundancy states my state = 13 -ACTIVE peer. Usage Guidelines. Step 5. Management: 192. Step 2: mode sso Example: Switch (config-red)# mode sso Configures SSO. Step 4: show running-config Example: Router# show redundancy Operating mode is sso redundancy mode sso hw-module slot 6 image disk0:rsp-pv-mz hw-module slot 7 image disk0:rsp-pv-mz Active in slot 6 Standby in slot 7 The system total uptime since last reboot is 2 weeks, 23 hours 41 minutes. while restarting the secondary WLC that was in maintenance mode, check the "Bulksync status" of redundancy summary in primary WLC and wait for until it turn as. +1 is the power supply module reserved for redundancy. (Cisco Controller) >show redundancy summary. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. The software will prompt to reboot the Standby Supervisor (in slot 5) - confirm to reboot - exit configuration mode and save the configuration. 第一個IP地址10. Enters redundancy configuration mode. To reload the standby switch if a parser return code (PRC) failure occurs during configuration synchronization, use the policy config-sync reload command in redundancy configuration. Step 4: mode sso. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the to support SSO mode. Since we couldnt afford downtime I rebooted standby controller that was in maintenance mode and it was able to boot in sso redundant mode. configure redundancy unit secondary. The two supervisors operate in an active/standby capacity in which only one of the supervisor modules is active at any given time, while. Router# configure terminal Router(config)# redundancy Router(config-red)# mode sso Router(config-red)# exit Router# copy running-config startup-config ヒント Cisco Catalyst 6500 シリーズ スイッチの詳細（設定例およびトラブルシューティング情報を含む）については、次のページに示される. End with CNTL/Z. When you configure the controller for HA SSO, the Cisco 600 Series OfficeExtend Access Points are not supported. Last switchover reason = none. If active supervisor fails, then standby sup will perform following in sequence: Layer3 protocol initialized, routing tables. SSO is supported in Cisco IOS Release 12. x（Catalyst 9200 スイッチ）コマンドリファレンス. General Restrictions Two RPs must be installed in the chassis, each running the same version of the Cisco IOS software. configure interface address management 10. exit 6. Check the Boot Mode 3. Communications = Up. cisco Systems, Inc. Step 3: end . 1. These sections describe supervisor engine redundancy using NSF with SSO: About Cisco IOS NSF-Aware and NSF-Capable Support; NSF with SSO Supervisor Engine Redundancy Overview. 2. in my case it was secondary. Configuring Cisco NSF with SSO • FindingFeatureInformation,page1 • PrerequisitesforNSFwithSSO,page1 • RestrictionsforNSFwithSSO,page2. Enters redundancy configuration mode. Router(config)# redundancy. Exits redundancy configuration mode and returns the switch to privileged EXEC mode. Cisco SSO (frequently used with NSF) minimizes the time a network is unavailable to its users following a switchover while continuing to forward IP packets. Enters redundancy configuration mode. Redundancy may not work due to differences between the Cisco IOS releases. Step 5:. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. Step 5: end. Wrong handling can happen and. Enters redundancy configuration mode. Configures SSO. Supervisor Module Redundancy. Step 6. Check if There is Sufficient Available Memory on Flash 4. I tried to switch on SSO mode on both wlc 5520. config redundancy mode sso. Step 4. 56. Hardware Mode = Duplex. Chapter 5 Configuring Supervisor Engine Redundancy Using RPR and SSO About Supervisor Engine Redundancy SSO supports stateful switchover of the following Layer 2 features. Enters redundancy configuration mode. SSO is supported in Cisco IOS Release 12. Permanent Virtual Circuits For ATM to support forwarding during and after switchover, ATM permanent virtual circuits (PVCs) must remain up not only within the networking device, but also within the ATM network. 2(20)EWA and later releases. For information about the in-chassis standby supervisors, enter the show redundancy rpr command in privileged EXEC mode on the Cisco StackWise Virtual active supervisor. In software, supervisor engine redundancy is enabled by running the redundant supervisor engine in route processor redundancy (RPR) or stateful switchover (SSO) operating mode. Step 5. Configures SSO. Example: Device(config-red)# end: Exits redundancy configuration mode and. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up Current Processor Information :----- Active Location = slot 1 Current Software state = ACTIVE Uptime in current state = 30 minutes Image Version = Cisco IOS Software [Fuji], Catalyst L3 Switch Software. Example: Device(config-red)# mode sso: Configures stateful switchover. Redundancy may not work due to differences between the Cisco IOS releases. show redundancy >>>>>> check here for mode you have configured. Redundant System Information :-----Available system uptime = 1 year, 49 weeks, 6 days, 20 hours, 30 minutes Switchovers system experienced = 2 Standby failures = 6 Last switchover reason = active unit removed. Book Contents Book Contents. 5. Router# show redundancy Redundant System Information : ----- Available system uptime = 39 minutes Switchovers system experienced = 1 Standby failures = 0 Last switchover reason = user forced Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. Step 5: Enabling SSO reboots the controllers to negotiate the HA role as per the configuration performed. . show redundancy Redundant System Information :-----Available system uptime = 11 hours, 31 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = none. The following are the ways in which Cisco StackWise Virtual's. SSO is supported in Cisco IOS-XE Release 3. It is not recomended to configure RA (Registration Authority) as it is not validated. Device# show redundancy Redundant System Information : ----- Available system uptime = 6 days, 5 hours, 28 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = none Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode =. When a redundant supervisor engine runs in SSO mode, the redundant supervisor engine starts up in a fully-initialized state and synchronizes with the persistent configuration and the running configuration of the active supervisor engine. VRRP and SSO can coexist but both features work independently. 0(22)S. Once you get them on the same version, you will be able to get to SSO. Configuraties. The software upgrade procedure supported by supervisor engine redundancy allows you to reload the Cisco IOS software image on the redundant supervisor engine, and once complete, reload the active supervisor engine once. In this article, we take a look at how to configure High Availability Stateful Switchover (HA SSO) on the Cisco 9800 WLCs running IOS-XE using Redundancy Management Interfaces (RMI) in addition to the Redundancy Ports (RP). Redundancy may not work due to differences between the Cisco. The default mode for the Cisco uBR10012 universal broadband router is SSO. Image Version = Cisco IOS Software, IOS-XE Software, Catalyst 3 850 L3 Switch Software (CAT3850-UNIVERSALK9-M), Version 03. Are these switches setup in this manner by default? Can the redundancy be disabled if I am not going to use redundancy? What are the commands to disable redundancy? switch 1 provision ws-c3850-48p. Enters redundancy configuration mode. 168. A redundancy VLAN is connected to the redundant port on Cisco WiSM2 through the backplane. By default, the system synchronizes all system files, which is the typical setting for most applications. Switchovers system experienced = 5. Follow these guidelines when configuring your system to SSO mode: You must use identical Cisco IOS images on the supervisor modules to support SSO mode. Standby として動作していた WLC のポートを変更するか、コンフィグの初期化する. 3. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. show redundancy states. When an RP is active and the other RP is standby, SSO enables the standby RP to take over if the active RP fails. Configured Redundancy Mode = SSO Operating Redundancy Mode = SSO Maintenance Mode = Disabled Communications = Down Reason: Simplex mode Current Processor Information :-----Active Location = slot 1 Current Software state = ACTIVE Uptime in current state = 6 days, 9 hours, 23 minutes Image Version = Cisco IOS Software, IOS-XE Software, Catalyst 3 Device # show redundancy Redundant System Information : ----- Available system uptime = 6 days, 9 hours, 23 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = not known Hardware Mode = Simplex Configured Redundancy Mode = SSO Operating Redundancy Mode = SSO Maintenance Mode = Disabled Communications = Down. Redundancy-MGNT: 192. Sets the router in SSO redundancy mode. Device# show redundancy Redundant System Information : ----- Available system uptime = 6 days, 5 hours, 28 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = none Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode =. Usage Guidelines. Example: Device(config-red)# mode sso: Configures stateful switchover. mode sso. Enabling SSO reboots the controllers to negotiate the HA role as per the configuration performed. Example: Device(config-red)# end: Exits redundancy configuration mode and returns to. Step 3: end. 147 as the Redundancy Management IP and controller2 with 9. 56. ※ このドキュメントでは AireOS 8. . SSO HSRP alters the behavior of HSRP when a device with redundant Route Processors (RPs) is configured for stateful switchover (SSO) redundancy mode. The Broadband High Availability Stateful Switchover feature allows you to configure subscriber redundancy policies that tune the synchronization process. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. Catalyst 4500 series switches allow a redundant supervisor engine to take over if the active supervisor engine fails. If you perform an online insertion and removal (OIR) of the module, the switch resets during the stateful switchover and the. Now if the HA unit is indeed an HA sku, then you don't need to have any license and all you have to do is enable secondary unit: config redundancy unit secondary. Switches can run multiple route processors (supervisors) in 3 modes: RPR (Route Processor Redundancy) RPR+ (Route Processor Redundancy plus) SSO (Stateful Switchover) While RPR was the 1 st one to be introduced, RPR+ came in later and the latest offering was SSO. The mode sso command can be entered only from within redundancy configuration mode. I performed a failover test (by executing command "redundancy force-switchover" and after the standby controller rebooted, HA seems to no longer be working: From active controller. The following is a sample output of the show redundancy rpr command run on the Cisco StackWise Virtual active supervisor:SSO is supported in Cisco IOS Release 12. Cisco recommends that you are familiar with stacking, stackwise-virtual (SVL), and "bundle" Vs "install" boot mode related concepts on Catalyst 9K switches. Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications = Up. mode sso. Router (config-red)# mode sso. The new High Availability (HA) feature (that is, AP SSO) set within the Cisco Unified Wireless Network software release version 7. According to cisco: SSO is the IOS High Availability feature that allows one RSP on a 7500 to immediately take over for the other RSP in the event of an RSP failure. The First Sign Of Life (FSOL) triggers that are supported on SSO include DHCP proxy (where the iWAG acts as the DHCP proxy server) and DHCP. Example: Router>enable Router#configure terminal Router(config)#redundancy Router(config-r)#mode none Router(config-red)#application redundancy Router(config-red-app)#group 1 Configure a name for the redundancy group. end. end. Switch# show running-config. When this command is entered, the standby switch is reloaded and begins to work in SSO mode. The software upgrade procedure supported by supervisor engine redundancy allows you to reload the Cisco IOS software image on the redundant supervisor engine, and once complete, reload the active supervisor engine once. Example: Device (config-red)# mode sso: Configures SSO. Router(config)# mode sso. Redundancy may not work due to differences between the Cisco IOS. If any of those mismatched commands are executed on the active switch, the standby. This example shows how to set the redundancy mode to SSO: Device(config)# redundancy Device(config-red)# mode sso Device(config-red)# policy config-sync prc reload. end. (RTU Evaluation License by now) - Network Connection beween the WLC5520: LAG. 90. config redundancy mode sso. If the HA unit is not an HA sku, then you need a minimum of 50 ap license. Copy the New Image to be Upgraded / Downgraded ISSU Workflows - Actual Upgrade One Step Work Flow Three Step Work Flow Post ISSU Checklist Action. config redundancy mode sso. Ensures that the PFC operating mode matches on both chassis, to ensure that the VSS comes up in SSO redundancy mode. Version 7. The SSO/ISSU feature supports only the Cisco ASR 1000 Series Aggregation Services Routers intrachassis (RP-to-RP) SSO, but not the interchassis (Cisco ASR1K-to-Cisco ASR1K) SSO. SSO works with Cisco NSF, which helps reduce the switchover downtime on Layer 3. Step 6. 4) Once WLC is back verify the Boot image version is matching with the Primary. Step 5. 48. Device# show redundancy Redundant System Information : ----- Available system uptime = 6 days, 5 hours, 28 minutes Switchovers system experienced = 0 Standby failures = 0 Last switchover reason = none Hardware Mode = Duplex Configured Redundancy Mode = sso Operating Redundancy Mode = sso Maintenance Mode = Disabled Communications =. 151. The show redundancy and show issu state commands verify that redundancy mode is enabled and that SSO and NSF are configured. SSO HSRP alters the behavior of HSRP when a device with redundant Route Processors (RPs) is configured for stateful switchover (SSO) redundancy mode. In this CCNP ENCOR lesson, we will focus on this redundancy mechanism. Manual Swact = enabled . 0 10. Catalyst 4500/4500-X series switches' VSS does not support route processor redundancy (RPR) mode. When this command is entered, the redundant supervisor engine is reloaded and begins to work in SSO mode. Switchover Process Restrictions † If any changes to the fabric configuration happen simultaneously with an RP switchover, the chassis is reset and all line cards are reset. 2(20)EWA and later releases. Enter configuration commands, one per line. Redundancy may not work due to differences between the Cisco IOS.